Even if we accept @LipglossAlly 's argument that they were treated unfairly, the truth is that H&M are desperate to be Royal and to be accepted within the fold. They wanted to 'collaborate with the Queen' when they left, represent the Commonwealth, and now he wants a reconciliation and his IPP status. The reality is that they are throwing a hissy fit because they can't have royalty and privilege on THEIR terms. So if the institution is rotten from the core, then Harry and Meghan actually want access to that very core, and to benefit from it.
After all, Meghan takes every opportunity to remind us she's a Duchess, and a Sussex, a place I'd suspect she would struggle to identify on a map.
I say this as someone who is as 'woke' as they come, and is not a Royalist, and writes about decolonisation for a living, I agree that the monarchy is an outdated institution, but Harry and Meghan are absolutely and fully complicit with its structures and more over, they want to be more enmeshed within it, rather than less.
Finally, as evidence, let me present what Harry had to say about the awful Ngozi Fulani incident that even Buckingham Palace thought was an act of racism. He defended Susan Hussey, and thought it was the media making a big deal out of nothing: https://www.mirror.co.uk/news/royals/harry-meghan-back-royal-aide-28904708
So Ngozi Fulani who had been a vocal supporter of Harry and Meghan, and had taken heat for it, was being told by Harry that it was 'just unconscious bias', and the media making a big deal out of nothing.
And THIS is the problem Harry and Meghan have, a lack of credibility. First they wanted to be half in and half out. Then narrative 2 was that they were on a freedom flight, escaping a racist and toxic nation and its press to grow chickens in California, and now we are back to narrative 1 where he never wanted to leave at all, but was forced to do so because of security...
I don't disagree that the monarchy could do with some reform. But Harry and Meghan don't want to reform the monarchy, they want to be in it wholeheartedly, just on their terms, and enjoy every perk that comes with it.